贵州省大方县余石水泥用灰岩矿矿体特征及成因研究

Ore characteristics and genesis of Yushi limestone for cement in Dafang County,Guizhou Province

贵州省境内石灰石矿产资源储量丰富且矿种品类齐全,其中以建筑石料用灰岩和水泥用灰岩矿种居多。本文研究了贵州省大方县余石水泥用灰岩矿床的矿体特征和矿床成因,总结了找矿标志。研究认为:余石水泥用灰岩矿床成矿规模较大,为开阔台地—浅海盆地相化学沉积型矿床;其质量总体能满足石灰质原料矿石化学成分Ⅱ级品一般要求。研究结果可为本地区今后的水泥用灰岩矿的地质找矿提供参考。

Limestone resources is rich and has great variety of mineral types in Guizhou Province,especially used for building stone and cement.This paper studied the ore characteristics and genesis of the Yushi limestone deposit for cement in Dafang County,Guizhou Province,and summarized the prospecting criteria.It was concluded that the Yushi cement limestone deposit is a large metallogenic scale,which is an open platform⁃shallow sea basin facies chemical sedimentary deposit.The quality of the limestone ore for cement can meet the general requirements of chemical composition gradeⅡ.The research results can provide reference for the geological prospecting of cement limestone in this area in future.